Effect of the Pt buffer layer on perpendicular exchange bias based on collinear/non-collinear coupling in a Cr2O3/Co 3Pt interface

T. Ashida, Y. Sato, T. Nozaki, M. Sahashi

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13 Citations (Scopus)

Abstract

In this study, we fabricated a Cr2O3 (0001) film without and with a Pt buffer layer and investigated its effect on perpendicular exchange coupling in a Cr2O3/Co3Pt interface. The results showed that the exchange bias field (μ0Hex) and blocking temperature (TB) of a Cr2O3 film without and with Pt were very different. The Cr2O3 film without Pt had a lower μ0Hex of 176 Oe and a lower TB of 75 K, whereas that with Pt had a higher μ0H ex of 436 Oe and a higher TB of 150 K. We discussed this difference in μ0Hex and TB values based on collinear/non-collinear coupling in a ferromagnetic and antiferromagnetic interface using Meiklejohn and Beans exchange anisotropy model.

Original languageEnglish
Article number17D711
JournalJournal of Applied Physics
Volume113
Issue number17
DOIs
Publication statusPublished - 2013 May 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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